Punch press



July 11, 1950 MQCLUNG 2,514,659

PUNCH PRESS Filed April 19, 1946 2 Sheets-$heet 1 w D 14 m/ ATTORNEY July 11, 1950 Filed April 19, 1946 E. F. MCCLUNG 2,514,659

PUNCH PRESS 2 Sheets-Sheet 2 INVENTOR.

ATTOP/Vff' Patented July 11, 1950 UNITED STATES PATENT OFFICE PUNCH PRESS Eugen-e F. McClung', Los Angeles; Caiif. Application April 19, 1946,,Serial No. 663,334.

My invention relates to a punch press and more particularly to a machine for punching and cuting segments or links. The present machine is an improvement upon that shown in my Patent No. 2,144,684, issued January 24,1939.

An object of the present'invention. is-to provide means in the work. material. itself for centering the material for cutting.

Another object is to provide means whereby twice as many segments or links canjbe cut-from the samelength of materiaL.

Still another object is to provide means for cutting from th workmaterial fillers or washers to be used in mats made from the. segments or links, without sacrificing any of the material that might otherwise be, used for the segments or links.

My invention. also has for its objects to provide such means that. are positivei'n operation,

convenient in use, easily installed in a working position and easily disconnected therewith,,economical of manufacture, .relativelyfsimple, and of general superiority and serviceability.

The invention also comprises novel. details or" construction and novel combinations and .arrangements of parts, which will more fully appear in the course of the following description. However, the drawings merely show and the description merely describes one embodiment of themesent invention, which is given by way of illustration or example only.

In the drawings, like reference characters designate similar parts in the several views.

Fig. 1 is a broken,,vertical sectional view of parts of a punch press embodying my present inventicm Figs. 2 to 6 are sections taken on the lines 2-2, 33, 5-4, 5--5 and GE, respectively, of Fig. 1.

Fig. 7 is a bottom plan view of the cuttin die and associated parts.

Fig. 8 is a plan view of work material, illustrating how it is punched and cut.

Reference is made to my co-pending application, Serial No. 663,335, filed contemporaneously herewith, but now abandoned, for subject matter shown and described but not claimed herein.

Referring more in detail to the drawings, .1 is a fragmentary view of apunchlpress. Remaining parts are illustratedinFig- 1 of my said patent. anyone skilled in the art to understand the construction and operation of my present improvements.

The reciprocating ram of thepunch press is suggested at It. .,A block 12 is mounted .on the ram lfi for reciprocation I therewith. A front clamping plate I3 is clamped to the block I2 by bolt and nut means [4 and I5. Customary, complementary, V-Shaped (in plan) recesses I5 and I! in the plate 13 and block 12 receive pin means However, Fig. 1 is believed: sufficient ifor Hi ona, topplate 19 of the cutting, device. The top plate, l9 ,has an underneath, longitudinal groove 20. A flat spring 2|- is arranged in the groove 20 for a purpose hereinafter more fully described. 7

.A body of thecutter carries on the under side thereof four smaller cutters 23, to 26 placed two-by-two, as best. shown. in. Fig. '7. Centrally of the four smaller cutters is a larger cutter Guides. 28 to 3.5. have roundedrrosessfi for centering work; material da between I same. guides arearrangedin two; parallel rowsof 2:8 to 31 on one-side, andIiZ-to. 35 alongthe other side, as shown in Fig. '71.

.Betweentheguides -35.and 3| on one side and guides 34 -35,-on .-the other sideis-r-arranged a i -shaped cutter comprising blades .38, 39- and 40. The;.blade..38; the topoi. the T, while-the aligned blades SQandAlLconstitute thetail oi the L. Adjacentendsofthe blades-39 and-.40 are embedded inra central guidee l The guide M has around nose. M ter: engaging the relatively large opening -43. cutby the cutter .21., to center the segment or link iorthe cutting step. Theblades 38 to lfltare mounted in a.base- '44 thatis bolted on the underside of; the body 22,, asv suggested at 4-5.

A stripper plate .46 is arranged on :a bedmember 47 that' ha-s' a longitudinal slot 48- .th erealong. for feeding, the work material 48 into the .ma chine. .Afrela'tively soft metal ,plateSfiislaid along the floor-of the siotjd fi in. the portion thereof opposite the cutters. The bed 41 rests on a base 51 that in turn is supported by a frame member 52 ofthe machine.

. Punches 53 reciprocate in aligned openings 56 and 51 in the base 5! and th bed .41.. A punch reciproeates in aligned openings :53 andlss the 'basel5l and bed 4'1, while punches recipr.o. cate in aligned openings .60 and 6.1 in .the base 5] and .bed 41. The punches .53- are arranged, when reciprocated, to punch plugs :62 out of the endsof the hollow cutters 25 and 25., as shown in Fig. 2. The punch 54 is arranged'when recipro cated, to punch phigslfi3 out ofwthe upper, end

of the hollow center-cutter 21., as shown in Fig. 4. The :flat spring :21, is inclined to tip thetop plug 53. rearwardly, so that "there can be no jamming of the plugs v(i3 in the groove "20. 'Thepunches 55 lilnew'ise pushthe plugs out o f the cutters 23 and '2 4 and into the groove 2-0.

It will be noted that the groove 20 is inclined downwardly so that the plugs pushed from the cutters will roll or settle downward and fall rearward-1y from the groove 20 by reason Of the reciprocation of the body 22 and top plate 19. Edit-'' able separating means for the different sizes of the plugs may be employed, if desired. The plugs 63 are preferably used as spacers and the like in arranged to be reciprocated on frame means 68,

by a cam 69 on a shaft that is driven by suitable means and timed to punch the plugs from the cutters and from the material after each punching operation. A coil sprin H is hooked to a bracket 12 under the frame. member 52 and 2. In a punch press, a reciprocating ram, mechanism to feed work material, hollow punch means on the ram arranged to punch a hole in the work material, rod means disposed to push plugs of the material longitudinally out of the punch means, spring means arranged to yieldingly push the plugs laterally of said longitudinal direction 7 for discharging same, cutting means disposed to to a lug '13 on the movable frame 61, to raise the movable frame =6? and thereby the punches 53 to 55, when permitted by the cam 69. The enlargement of the cam 69 causes the retractive movement 'of the mcvableframe and punches. 'A slot 14 permits longitudinal movement of th frame-61 relative to the shaft I0.

A mutilated, toothed feeding wheel 15 is rotated counterclockwise, as indicated by the arrow A, by means of the shaft 16 which is driven by the common power source (not shown) for the ma chine. In the operation of the machine, the work material 49 is manually fed under the wheel 15, the toothed portion of which advances the material between the guides 28, 29, 32 and 33 to a position under the cutters 23 to 21. The feeding wheel 15 having reached approximately the position shown in Fig. 1, further advance of the work material is temporarily halted while the cutters descend and cut the four smaller holes 11 to 80 and the larger opening 43 in the material. After the cutters have-been withdrawn, the intermittent feed is again resumed by the wheel 15, until the punched part of the work material is below the blades 38 to 40. Descent of the guide 4| into the opening 43 slightly ahead of the blades, as suggested in Fig. 6, centers the material so that the cross blade 38 severs the links or segments 8| and 82 from the main body of the work material 49 along'the correct line 83. -At the same time the blades 39 and 40 cut the links or segments 8| and 82 apart along the line 84, forming two links side-by-side. The links BI and 82 are caught as they fall from the rear end of the groove 48. They are then ready to be assembled in a mat.

The stripping plate 46 permits the cutters to be withdrawn from the material while holding the-material down.

' While I have illustrated and described what I now regard as the preferred embodiment of my invention, the construction is, of course, subject to modifications without departing from the spirit and scope of my invention. I, therefore, do not wish to restrict myself to the particular form of construction illustrated and described, but desire to avail myself of all modifications that may fall within the scope of the appended claims. Having thus described my invention, what I claim and desire to secure by Letters Patent is: 1. In a punch press, a reciprocating ram, mechanism to feed work material, hollow punch means on the ram arranged topunch a hole in the work material, rod means disposed to push plugs of the material longitudinally out of the punch means, and spring means arranged to yieldingly push the plugs laterally of said longitudinal direction for discharging same.

out the material in a succeeding step in the operation, and centering means arranged to engage the hole in the work material punched in the punching step, to center the material for cutting same.

3. In a punch press, a reciprocating ram, mechanism to feed work material, guide means on the ram arranged to reciprocate therewith to position the work material, punch means on the ram disposed to punch a hole in work material so positioned, cutting means mounted on the ram to cut the material when the mechanism advances the work material beyond the punching area, and centering means arranged to engage the hole in the work material punched in the punching step, to center the material for cutting same.

4. In a punch press, a reciprocating ram, mechanism to feed work material, tapering guide means on the ram arranged to reciprocate therewith to position the work material, punch means on the ram disposed to punch a hole in work ma terialso positioned, cutting means mounted on the ram to cut the material when the mechanism advances the work material beyond the punch-- ing area, and centering means arranged to engage the hole in the work material punched in the punching. step, to center the material for cutting same. I 5. In a punch press, a reciprocating ram, mechanism to feed work material, hollow punch means on the ram arranged to punch a hole in the work material, stripper means for preventing the material from following. retracting movements of the punch means, rod means disposed to push plugs of the material from the punch means, cutting means mounted on the ram and disposed opposite a succeeding stop of the Work material to sever portions from the stripmaterial and. to cut the portions into segments having complementary parts of the hole, and means to severally discharge from the press the plugs and the said segments.

EUGENE F. McCLUNG.

7 REFERENCES CITED The following references are of record in the file of this patent;

UNITED STATES- PATENTS Germany Mar. 19, 1932 

